Improvement in preserving wood



ttnitzh $21125 jfiatmt dffim NATHAN H. THOMAS, OF NEW ORLEANS; LOUISIANA.

Letters Patent No. 113,706, dated April 11, 1871.

IMPROVEMENT IN PRESERVING WOOD.

The Schedule referred to in these Letters Patent and making part of the same.

I, NATHAN H. THOMAS, of New Orleans, Louisiana, have discovered a new, useful, and improved Method of Preserving YVood from Decay, whether the same be exposed to the contact of earth, water, air, or protected from these elements, and also from its liability to be attacked and destroyed by worms or any kind of insects.

Mymetbod is the simple process of saturating the wood in resin oil, warm or cold, or at'any required temperature, according to the circumstances. In the event of the wood being of moderate dimensions, thin boards, for instance, I apply the oil cold; and for wood of large dimensions I apply the oil hot, in either of the above cases, by immersing the wood inthe oil, or by applying the same to the wood with a brush, or in 

